public CaptchaContent Build()
{
bool isSuccess = false;
VerifyCode codeObj = new VerifyCode();
codeObj.FontSize = 20;
codeObj.FWidth = 20;
string code = codeObj.CreateVerifyCode(4);
CaptchaContent captchaContent = CaptchaContent.Create(KeyGenerator.GetGuidKey().ToString(), code);
return(_cacheManager.Get(captchaContent.Key, ctx =>
{
ctx.Monitor(_clock.When(TimeSpan.FromMinutes(Interval)));
ctx.Monitor(_signals.When($"{ctx.Key}-changed"));
try
{
Image img = codeObj.CreateImageCode(code);
System.IO.MemoryStream ms = new System.IO.MemoryStream();
//将图像保存到指定的流
img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
captchaContent.Image = "data:image/jpeg;base64," + Convert.ToBase64String(ms.GetBuffer());
isSuccess = true;
}
catch (Exception ex)
{
Logger.Error(ex, $"发送图形验证码出错,Key{captchaContent.Key},内容{ex.Message}");
}
if (!isSuccess)
{
//短信发送失败了，更新缓存
_signals.Trigger($"{ctx.Key}-changed");
}
return captchaContent;
}));
}
public CaptchaDialog(ICaptcha captcha, CaptchaContent captchaContent) {
Captcha = captcha;
CaptchaContent = captchaContent;
InitializeComponent();
SetupView();
}